:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --surface-2: #f2f0ea;
  --text: #1d2420;
  --muted: #5b655f;
  --border: #dedad0;
  --accent: #2f6b45;
  --accent-soft: #e3efe6;
  --bad: #a3392b;
  --bad-soft: #f7e4e0;
  --code-bg: #f2f0ea;
  --radius: 10px;
  --max: 1040px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121614;
    --surface: #191e1b;
    --surface-2: #202622;
    --text: #e6ebe7;
    --muted: #9ba69f;
    --border: #2e3631;
    --accent: #7cc196;
    --accent-soft: #1f3327;
    --bad: #f08a7a;
    --bad-soft: #3a211d;
    --code-bg: #202622;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121614;
  --surface: #191e1b;
  --surface-2: #202622;
  --text: #e6ebe7;
  --muted: #9ba69f;
  --border: #2e3631;
  --accent: #7cc196;
  --accent-soft: #1f3327;
  --bad: #f08a7a;
  --bad-soft: #3a211d;
  --code-bg: #202622;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font);
}
a { color: var(--accent); }
code, pre { font-family: var(--mono); font-size: 0.9em; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

header.top {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
.brand svg { width: 28px; height: 28px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 0.95rem; }
nav a:hover { color: var(--text); }

.hero { padding: 64px 0 40px; }
.hero h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); line-height: 1.15; margin: 0 0 18px; letter-spacing: -0.02em; max-width: 22ch; }
.hero p.lead { font-size: 1.15rem; color: var(--muted); max-width: 62ch; margin: 0 0 26px; }
.pill { display: inline-block; font-size: 0.8rem; font-weight: 600; color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 3px 10px; margin-bottom: 16px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-block; padding: 10px 18px; border-radius: 8px; font-weight: 600; text-decoration: none; border: 1px solid var(--border); color: var(--text); background: var(--surface); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--bg); }

section { padding: 44px 0; border-top: 1px solid var(--border); }
section h2 { font-size: 1.6rem; margin: 0 0 8px; letter-spacing: -0.01em; }
section p.sub { color: var(--muted); margin: 0 0 24px; max-width: 70ch; }

.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.96rem; }

.table-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 0.95rem; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
thead th { background: var(--surface-2); font-weight: 600; }
tbody tr:last-child td { border-bottom: 0; }
td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
td.good { color: var(--accent); font-weight: 600; }
td.bad { color: var(--bad); font-weight: 600; }
.note { font-size: 0.88rem; color: var(--muted); margin-top: 12px; max-width: 80ch; }

.player { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: #121314; }
.player-fallback { padding: 18px; color: #c9d1cc; font-family: var(--mono); font-size: 0.85rem; }

.arch { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; align-items: stretch; counter-reset: step; }
.arch .stage { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 14px 14px; counter-increment: step; }
.arch .stage::before { content: counter(step); position: absolute; top: 10px; right: 12px; font-size: 0.75rem; color: var(--muted); font-family: var(--mono); }
.arch .stage b { display: block; margin-bottom: 4px; }
.arch .stage span { color: var(--muted); font-size: 0.9rem; }
.arch .stage.git { background: var(--surface-2); }

ul.limits { margin: 0; padding-left: 20px; color: var(--muted); }
ul.limits li { margin: 4px 0; }

footer { border-top: 1px solid var(--border); padding: 28px 0 40px; color: var(--muted); font-size: 0.92rem; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

@media (max-width: 600px) {
  nav { display: none; }
  .hero { padding: 40px 0 28px; }
  section { padding: 32px 0; }
}